Patents by Inventor Jeong-Hwan Lee

Jeong-Hwan Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240069100
    Abstract: Designs of thermo-hygrostat devices capable of uniformly maintain temperature and humidity inside a chamber are disclosed. One example of such a device can include, among others, a chamber in which a sample is accommodated and internal temperature and humidity can be controlled; a lower duct provided on a first side of the chamber and sending a fluid inside the chamber to an outside of the chamber; a temperature and humidity control portion provided on the lower duct and controlling temperature and humidity of a fluid received from the lower duct.
    Type: Application
    Filed: August 25, 2023
    Publication date: February 29, 2024
    Inventors: Jeong Hwan LEE, Ji Seok LEE, Yu Geun KWON, Hye Lim DO, Seok Ha PARK, Hyeon Seok CHA
  • Patent number: 11912916
    Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having lower operating voltage, higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: February 27, 2024
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hyun Kim, Ji-Song Jun, Jeong-Hwan Jeon, Yeon-Gun Lee, Seon-Jin Hwang, Young-Jun Cho
  • Patent number: 11891704
    Abstract: A method for preventing corrosion of a spent nuclear fuel canister by using electrolytic corrosion protection, according to the present invention, has an effect of enabling a semi-permanent operation and, particularly, has effects of preventing oxidation and corrosion problems of a canister made of a metal material, in consideration of various environmental variables that may cause corrosion, and ensuring the structural stability of the canister so as to enable a semi-permanent operation.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: February 6, 2024
    Assignee: KOREA RADIOACTIVE WASTE AGENCY
    Inventors: Seung Hyun Kim, Min Seok Kim, Sang Hwan Lee, Chang Min Shin, Hyung Ju Yun, Man Ho Han, Jeong Hwan Lee, Chun Hyung Cho
  • Publication number: 20230314282
    Abstract: In order to increase the accuracy of status or failure diagnosis of machine tools and reduce the time and costs required for data collection and algorithm development for diagnosis, sensors are mounted on specific elements of the machine tools and measurement data is collected while operating under the specific operating conditions during a time interval between one machining operation and another machining operation to perform status or failure diagnosis of the machine tools. According to the present invention, by using data collected while operating machine tools under the predefined specific conditions using a time interval between one machining operation and another machining operation, it is possible to more accurately perform diagnosis while allowing less noise to be mixed in the data and reducing the time required for data collection for the development of diagnostic algorithm.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Munyoung LEE, Sung Jae YOON, Jung-Chan Na, Jeong Hwan Lee, Seung Hyub Jeon
  • Publication number: 20230197009
    Abstract: An organic light emitting diode display device includes: a substrate having a plurality of subpixels; a driving transistor in each of the plurality of subpixels on the substrate; a light emitting diode in each of the plurality of subpixels on the driving transistor; and a low level line between the driving transistor and the light emitting diode in each of the plurality of subpixels.
    Type: Application
    Filed: October 6, 2022
    Publication date: June 22, 2023
    Inventors: Eui-Tae Kim, Jeong-Hwan Lee
  • Publication number: 20230128142
    Abstract: A battery pack includes a pack housing, at least one battery module disposed inside the pack housing, and a vent hole connecting inside and outside of the pack housing, wherein the battery module includes a plurality of battery cells and a first thermal propagation (TP) blocking member disposed between the plurality of battery cells.
    Type: Application
    Filed: October 25, 2022
    Publication date: April 27, 2023
    Inventors: Jun Hee JUNG, Jeong Woon KO, Bon Seok KU, Ja Sung YUN, Jeong Hwan LEE, Sei Hoon CHO, Ha Neul CHOI, Jae Il HWANG
  • Publication number: 20230105592
    Abstract: The present invention relates to an organic solvent-soluble copolymerized polyester, a composition for forming an ultrafiltration membrane including the same, and a high water-permeability reverse osmosis membrane prepared therefrom. More specifically, the present invention relates to a polyester that has a high solubility in organic solvents at room temperature and thus can be used to produce ultrafiltration membranes at low cost, a composition for forming an ultrafiltration membrane including the same, and a high water-permeability reverse osmosis membrane prepared therefrom, wherein the reverse osmosis membrane has a reduced production cost and high water permeability.
    Type: Application
    Filed: April 2, 2021
    Publication date: April 6, 2023
    Applicant: TORAY ADVANCED MATERIALS KOREA INC.
    Inventors: Gwang Su BYUN, Jae Won LIM, Jeong Hwan LEE
  • Publication number: 20220323182
    Abstract: An embodiment of the present invention provides an indirect bonding device for an orthodontic apparatus, the indirect bonding device comprising: a jig main body part in a form that covers the tooth surface of a subject undergoing a procedure; an accommodation part having grooves capable of accommodating an orthodontic bracket into the internal space of the jig main body part; and a discharge hole part which is formed as at least one hole passing through the inner and outer portions of the jig main body part and through which a bonding agent excessively introduced into the orthodontic bracket is discharged.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 13, 2022
    Applicant: OSSTEMIMPLANT CO., LTD.
    Inventor: Jeong-Hwan LEE
  • Publication number: 20220209325
    Abstract: Provided is a pouch-type battery cell capable of being directly accommodated in a battery pack, and a battery pack including the same. In the battery pack, a heat exchange portion of a battery cell assembly formed by stacking a plurality of battery cells each including an electrode tab lead portion and a heat exchange portion is configured to be in contact with a heat conduction member disposed on a bottom portion of a housing without a sealed surface, and a corner portion formed to protrude from one end of the electrode tab lead portion is configured to be accommodated through a bus bar assembly, a cover plate, or a step portion of the bottom portion of the housing to be electrically insulated.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 30, 2022
    Inventors: Jun Hee Jung, Jae Il Hwang, Bon Seok Ku, Jeong Hwan Lee, Sei Hoon Cho
  • Patent number: 11309099
    Abstract: The present invention relates to a disposal container and a storage system for high-level radioactive waste and, more specifically, to a disposal container for high-level radioactive waste using multiple barriers and a barrier system using thereof, the disposal container having the multiple barriers consisting of an inner wall made of carbon steel for excellent corrosion resistance and ease of manufacture, a middle wall made of Inconel, which is bonded to a lateral surface of the inner wall, and an outer wall made of copper, which is bonded to a lateral surface of the middle wall.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: April 19, 2022
    Assignee: KOREA RADIOACTIVE WASTE AGENCY
    Inventors: Seung-Hyun Kim, Hyung-Jin Kim, Hyung-Ju Yun, Chang-Min Shin, Min-Seok Kim, Jeong-Hwan Lee, Sang-Hwan Lee, Man-Ho Han, Tae-Man Kim
  • Publication number: 20220023882
    Abstract: Disclosed is a fine dust collecting device using a human body based electrostatic energy harvesting element. The fine dust collecting filter device includes an electrostatic energy harvesting element for collecting and generating current; a charging filter connected to the electrostatic energy harvesting element such that the charging filter is electrically charged to have a first polarity and thus electrically charges fine dust particles; a collecting filter connected to the electrostatic energy harvesting element such that the collecting filter is electrically charged to have a second polarity opposite to the first polarity; and a rectifier disposed between and connected to the electrostatic energy harvesting element, and the charging filter and the collecting filter.
    Type: Application
    Filed: July 20, 2021
    Publication date: January 27, 2022
    Applicants: Research & Business Foundation Sungkyunkwan University, SAMSUNG LIFE PUBLIC WELFARE FOUNDATION
    Inventors: SangWoo KIM, Byung Ok CHOI, Min Ki KANG, Jeong Hwan LEE, Young Jun KIM, In Yong SUH
  • Publication number: 20210398703
    Abstract: The present invention relates to a disposal container and a storage system for high-level radioactive waste and, more specifically, to a disposal container for high-level radioactive waste using multiple barriers and a barrier system using thereof, the disposal container having the multiple barriers consisting of an inner wall made of carbon steel for excellent corrosion resistance and ease of manufacture, a middle wall made of Inconel, which is bonded to a lateral surface of the inner wall, and an outer wall made of copper, which is bonded to a lateral surface of the middle wall.
    Type: Application
    Filed: August 21, 2019
    Publication date: December 23, 2021
    Inventors: Seung-Hyun KIM, Hyung-Jin KIM, Hyung-Ju YUN, Chang-Min SHIN, Min-Seok KIM, Jeong-Hwan LEE, Sang-Hwan LEE, Man-Ho HAN, Tae-Man KIM
  • Publication number: 20210388509
    Abstract: A method for preventing corrosion of a spent nuclear fuel canister by using electrolytic corrosion protection, according to the present invention, has an effect of enabling a semi-permanent operation and, particularly, has effects of preventing oxidation and corrosion problems of a canister made of a metal material, in consideration of various environmental variables that may cause corrosion, and ensuring the structural stability of the canister so as to enable a semi-permanent operation.
    Type: Application
    Filed: September 11, 2019
    Publication date: December 16, 2021
    Inventors: Seung Hyun KIM, Min Seok KIM, Sang Hwan LEE, Chang Min SHIN, Hyung Ju YUN, Man Ho HAN, Jeong Hwan LEE, Hyung Jin KIM, Tae Man KIM
  • Patent number: 10923613
    Abstract: An energy harvesting apparatus including light collecting particles is provided. The energy harvesting apparatus includes a light collecting layer for collecting light incident thereon from the outside, a first charging member on a first surface of the light collecting layer, a second charging member on a surface of the light collecting layer opposite the first surface, and solar cells on opposite light exit surfaces between the first and second surfaces of the light collecting layer.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: February 16, 2021
    Assignees: Samsung Electronics Co., Ltd., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Young-jun Park, Sang-woo Kim, Yun-kwon Park, Hong-joon Yoon, TaeYun Kim, Hyoungtaek Kim, Hye-jeong Park, Youngin Son, Wanchul Seung, Hanjun Ryu, Jeong Hwan Lee
  • Patent number: 10912022
    Abstract: The present disclosure discloses a power saving optimization method and device for an access point of a wireless local area network. The present embodiment discloses a power saving optimization method and device for optimizing the weak wakeup interval, a value of the weak awake time period, and a predicted value of power consumption between a station and an access point associated, in order to optimize power saving when the station performs operations in a low power mode, so as to maintain a sleep mode over a long period of time to a maximum extent without data loss in the low power mode.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: February 2, 2021
    Assignee: Dialog Semiconductor Korea Inc.
    Inventors: Jae Ho Kim, Chang Hwan Park, Jeong Hwan Lee
  • Patent number: 10613633
    Abstract: There is provided a tactile feedback device comprising: an array of surface charge generation units; and an array of pressure-generation units, wherein the array of the pressure-generation units is spaced apart from the array of the surface charge generation units, wherein the array of the pressure-generation units is movable relative to the array of the surface charge generation units, wherein an attractive or repulsive force is generated between a corresponding surface charge generation unit of the array of surface charge generation units and a corresponding pressure-generation unit of the array of the pressure-generation units, based on a polarity of surface charges induced in the corresponding surface charge generation unit.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: April 7, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Sang Woo Kim, Wan Chul Seung, Hong Joon Yoon, Sung Soo Kwak, Dong Hoon Kim, Tae Yun Kim, Min Ki Kang, Kang Hyuck Lee, Sung Kyun Kim, Jeong Hwan Lee, Seong Su Kim
  • Patent number: 10611109
    Abstract: Provided is a manufacturing method of an optical film, which manufactures an optical film in which at least a first film and a second film are stacked, the method including: pressing the first film and the second film with the optical film by passing both the first film and the second film between a pair of pressing rolls; forming a slit line in a width direction of the optical film by cutting the second film without cutting the first film at a rear end of a connection portion when the connection portion is included, to which a unit film is connected by a connection member between the first film and the second film which are pressed in the pressing; and conveying the optical film by passing the optical film with the slit line in the slit forming between a pair of conveying rolls.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: April 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jeong Hwan Lee, Yun Seok Choe, Joo Sang Kim, Do Won Yang, Yong Gou Lee, Bong Su Jeung, Jea Han Ryoo
  • Publication number: 20200006587
    Abstract: An energy harvesting apparatus including light collecting particles is provided. The energy harvesting apparatus includes a light collecting layer for collecting light incident thereon from the outside, a first charging member on a first surface of the light collecting layer, a second charging member on a surface of the light collecting layer opposite the first surface, and solar cells on opposite light exit surfaces between the first and second surfaces of the light collecting layer.
    Type: Application
    Filed: July 18, 2017
    Publication date: January 2, 2020
    Inventors: Young-jun PARK, Sang-woo KIM, Yun-kwon PARK, Hong-joon YOON, TaeYun KIM, Hyoungtaek KIM, Hye-jeong PARK, Youngin SON, Wanchul SEUNG, Hanjun RYU, Jeong Hwan LEE
  • Publication number: 20190349851
    Abstract: The present disclosure discloses a power saving optimization method and device for an access point of a wireless local area network. The present embodiment discloses a power saving optimization method and device for optimizing the weak wakeup interval, a value of the weak awake time period, and a predicted value of power consumption between a station and an access point associated, in order to optimize power saving when the station performs operations in a low power mode, so as to maintain a sleep mode over a long period of time to a maximum extent without data loss in the low power mode.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 14, 2019
    Inventors: Jae Ho KIM, Chang Hwan PARK, Jeong Hwan LEE
  • Patent number: 10468996
    Abstract: The present disclosure enables materials of a triboelectric charging member to exhibit a characteristic of increased surface charge density, thereby improving output of a triboelectric generating device. Accordingly, the present disclosure provides a triboelectric generating device showing improved output without increasing a size of the triboelectric generating device or without increasing amounts of materials required for the triboelectric generating device.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: November 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-jun Park, Sang-woo Kim, Yun-kwon Park, Wan chul Seung, Hong-joon Yoon, Keun young Lee, Jeong hwan Lee, Ju-hyuck Lee